Karuah River – current river water temperature and swimming conditions
This page shows the current river water temperature at Karuah River in New South Wales. You can explore recent temperature trends, typical monthly ranges, and historical averages for this date. The page also includes a 7-day water temperature forecast, local weather conditions, and an overview of how suitable the river is for swimming.
Current Water Temperature
The water temperature in Karuah River today is 21°C.
Water Temperature in Karuah River: Daily Trends, Historical Records, and Forecast
✅ River water between 20 and 25°C is ideal for swimming and offers very comfortable conditions for most people. Combined with warm air temperatures and settled weather, this range is perfect for extended swims and family-friendly activities. Rivers may still feel slightly cooler than lakes due to gentle currents, which many swimmers find refreshing. Even on partly cloudy days, swimming remains enjoyable.
Water Temperature Over the Last 30 Days
Water temperatures in Karuah River have remained fairly stable over the past 30 days, though a cooler trend has emerged in the last week.
According to our forecast, the water temperature in Karuah River will be 19.8°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Water Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| Mar 12 | 21.8°C | 20.7°C | |
| Mar 13 | 23.0°C | 20.7°C | |
| Mar 14 | 23.0°C | 20.7°C | |
| Mar 15 | 22.0°C | 20.7°C | |
| Mar 16 | 21.8°C | 20.7°C | |
| Mar 17 | 21.7°C | 20.7°C | |
| Mar 18 | 21.7°C | 20.7°C | |
| Mar 19 | 22.0°C | 20.7°C | |
| Mar 20 | 20.8°C | 20.7°C | 20.8°C |
| Mar 21 | 20.7°C | 20.7°C | |
| Mar 22 | 20.7°C | 20.5°C | |
| Mar 23 | 20.7°C | 20.4°C | |
| Mar 24 | 20.7°C | 20.3°C | |
| Mar 25 | 20.7°C | 20.1°C | |
| Mar 26 | 20.7°C | 20.0°C | |
| Mar 27 | 20.7°C | 19.8°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual river water temperatures may vary by several degrees from the reported values, particularly after heavy rainfall or periods of changing weather. Rainfall, river flow rates, and runoff from cooler upstream areas can significantly affect water temperature, especially in flowing sections and shaded stretches. Air temperature and cloud cover also play an important role, with warm, sunny conditions helping rivers warm up more quickly. As a result, noticeable temperature differences can occur along the same river.
Our forecast is based on a proprietary mathematical model that takes into account real-time river temperature changes, historical data, seasonal patterns, river flow conditions, recent rainfall, and local air temperature. We also factor in broader weather conditions specific to each region of Australia to improve accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Today | Yesterday | A Week Ago |
|---|---|---|---|
| January | 20°C | 23°C | 25°C |
| February | 20°C | 22°C | 24°C |
| March | 17°C | 21°C | 23°C |
| April | 15°C | 17°C | 21°C |
| May | 11°C | 14°C | 18°C |
| June | 9°C | 12°C | 15°C |
| July | 8°C | 10°C | 13°C |
| August | 9°C | 11°C | 13°C |
| September | 11°C | 13°C | 15°C |
| October | 14°C | 16°C | 18°C |
| November | 17°C | 19°C | 21°C |
| December | 20°C | 21°C | 23°C |
Karuah River: Water Temperature by Location
Stroud
Karuah
Location & Local Information
Source Gloucester Tops, Great Dividing Range
• location below The Mountaineer, southwest of Gloucester
• elevation 598 m (1,962 ft)
Mouth Port Stephens
• location Karuah
• elevation 0 m (0 ft)
Length 101 km (63 mi)
The Karuah River runs from the forested hills inland of the Mid North Coast down to Port Stephens, and its water temperature reflects both the seasons and the mix of freshwater and tidal influence. In summer, temperatures usually sit around 22–26°C, especially in the upper and middle reaches where the water is mostly fresh and slow-moving. Spring and autumn tend to be milder, with the river holding between 18–22°C, which is still comfortable for swimming on warm days. In winter, the water cools noticeably, often dropping to about 12–16°C, feeling brisk but manageable for short dips, particularly on clear, sunny days.
Swimming Conditions
Swimming in the Karuah River is generally allowed and popular in the non-tidal sections upstream, where the current is gentler and the water is clearer. These areas are commonly used by locals for casual swims, paddling, and cooling off during hot weather. Closer to the estuary, tidal flows can affect water clarity and temperature, making conditions less predictable. After heavy rain, the river can rise quickly and the water temperature can fall, so swimming is best avoided then. In stable conditions, though, the Karuah River offers a relaxed and safe freshwater swimming experience away from the busy coastal beaches.